MAC215986
346
Revision A
Replacing Pointed Knife Guards
Guards become dull and need to be replaced. This procedure is for replacing standard guards and the special (drive side)
guards closest to the knife drive motor.
DANGER
To prevent bodily injury or death from the unexpected start-up or fall of a raised machine, always stop the engine and
remove the key before leaving the operator
’
s seat, and always engage the safety props before going under the
machine for any reason.
WARNING
Wear heavy gloves when working around or handling knives.
IMPORTANT:
When replacing pointed knife guards, ensure the hold-down sequence is correct for your header type and width. For more
information, refer to
4.8.7 Pointed Knife Guards and Hold-Downs, page 337
1028417
1
2
3
4
5
Figure 4.137: Drive Side Pointed Knife Guards
IMPORTANT:
Single- and double-knife headers:
On both ends of the header,
position 1 (outboard guard) is a short knife guard. On the drive
side(s) of the header, positions 2, 3, and 4 are pointed end knife
guards (without wear bar). Starting at position 5, the remaining
guards are pointed knife guards. Ensure that the proper
replacement guards are installed at these locations.
IMPORTANT:
Double-knife headers:
A pointed center knife guard installed
where the two knives overlap. The pointed center knife guard
has a slightly different replacement procedure. For instructions,
refer to
Replacing Pointed Center Knife Guard
1.
Raise the reel fully.
2.
Shut down the engine, and remove the key from the ignition.
3.
Engage the reel safety props. For instructions, refer to
Engaging Reel Safety Props, page 33
.
4.
Open the endshield. For instructions, refer to
Opening Header Endshields, page 35
5.
Rotate the flywheel attached to the knife drive box to manually stroke the knife until the knife sections are spaced
midway between the guards.
6.
Close the endshield. For instructions, refer to